// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <string>

#include "base/message_loop/message_loop.h"
#include "content/child/child_process.h"
#include "content/renderer/media/media_stream.h"
#include "content/renderer/media/mock_media_stream_registry.h"
#include "content/renderer/media/video_track_to_pepper_adapter.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/WebKit/public/web/WebHeap.h"

namespace content {

static const std::string kTestStreamUrl = "stream_url";
static const std::string kTestVideoTrackId = "video_track_id";
static const std::string kUnknownStreamUrl = "unknown_stream_url";

class VideoTrackToPepperAdapterTest : public ::testing::Test,
                                      public FrameReaderInterface {
public:
    VideoTrackToPepperAdapterTest()
        : registry_(new MockMediaStreamRegistry())
    {
        handler_.reset(new VideoTrackToPepperAdapter(registry_.get()));
        registry_->Init(kTestStreamUrl);
        registry_->AddVideoTrack(kTestVideoTrackId);
        EXPECT_FALSE(handler_->GetFirstVideoTrack(kTestStreamUrl).isNull());
    }

    MOCK_METHOD1(GotFrame, void(const scoped_refptr<media::VideoFrame>&));

    void TearDown() override
    {
        registry_.reset();
        handler_.reset();
        blink::WebHeap::collectAllGarbageForTesting();
    }

    void DeliverFrameForTesting(const scoped_refptr<media::VideoFrame>& frame)
    {
        handler_->DeliverFrameForTesting(this, frame);
    }

protected:
    std::unique_ptr<VideoTrackToPepperAdapter> handler_;
    // A ChildProcess and a MessageLoop are both needed to fool the Tracks and
    // Sources inside |registry_| into believing they are on the right threads.
    const ChildProcess child_process_;
    const base::MessageLoop message_loop_;
    std::unique_ptr<MockMediaStreamRegistry> registry_;
};

// Open |handler_| and send a VideoFrame to be received at the other side.
TEST_F(VideoTrackToPepperAdapterTest, OpenClose)
{
    // Unknow url will return false.
    EXPECT_FALSE(handler_->Open(kUnknownStreamUrl, this));
    EXPECT_TRUE(handler_->Open(kTestStreamUrl, this));

    const base::TimeDelta ts = base::TimeDelta::FromMilliseconds(789012);
    const scoped_refptr<media::VideoFrame> captured_frame = media::VideoFrame::CreateBlackFrame(gfx::Size(640, 360));
    captured_frame->set_timestamp(ts);

    EXPECT_CALL(*this, GotFrame(captured_frame));
    DeliverFrameForTesting(captured_frame);

    EXPECT_FALSE(handler_->Close(NULL));
    EXPECT_TRUE(handler_->Close(this));
}

TEST_F(VideoTrackToPepperAdapterTest, OpenWithoutClose)
{
    EXPECT_TRUE(handler_->Open(kTestStreamUrl, this));
}

} // namespace content
